Description of Business and Summary of Significant Accounting Policies (Details) - Schedule of change in the allowance for doubtful accounts - USD ($) $ in Thousands		12 Months Ended
		Jul. 31, 2020	Jul. 31, 2019
Reserves deducted from accounts receivable:
Allowance for doubtful accounts, Balance at beginning of year		$ 5,444	$ 5,358
Allowance for doubtful accounts, Additions charged to costs and expenses		3,109	2,028
Allowance for doubtful accounts, Deductions	[1]	(2,468)	(1,942)
Allowance for doubtful accounts, Balance at end of year		$ 6,085	$ 5,444

[1] Primarily uncollectible accounts written off, net of recoveries.